Ever tossed an ugly sweater from your aunt in the trash after wearing it over to her house just once? If you're a Brit, that action added you to the ranks of the more than 12 million citizens who do the same thing every year. As it nears the end of its five-year Plan A sustainability initiative, Marks & Spencer released a poll last week last week showing that British consumers annually dump nearly $142 million of clothing worn a single time into landfills. In the latest promotion for its Shwopping customer clothing recycling program -- which takes in used clothing and donates it to the Oxfam human rights organization -- M&S released a YouGov poll of 2,200 UK consumers stating that in the past year, one in five UK consumers threw at least one item of clothing away after only one wearing. The Shwopping program, launched in April, accepts in-store clothing donations – includi...